PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/08-21:27:50
G10     293.9          51.5                9.7 +/-    1.35      12.0 +/-    1.35  0.050 / 0.040
G15     46.9           32.1                7.6 +/-    0.94      12.7 +/-    0.94  0.040 / 0.040
G20     346.3          65.3                8.3 +/-    0.45       9.1 +/-    0.45  0.060 / 0.110
G21     80.7           76.3               10.0 +/-    0.68      10.2 +/-    0.68  0.080 / 0.100
G24     102.8          25.2               11.1 +/-    1.62      21.6 +/-    1.62  0.070 / 0.080
G27     304.6          32.6                9.2 +/-    2.06      15.3 +/-    2.06  0.040 / 0.080
G29     167.9          11.1               13.7 +/-    1.83      37.3 +/-    1.83  0.040 / 0.050
G32     208.7          28.7               14.8 +/-    2.00      26.6 +/-    2.00  0.040 / 0.040